Chapt06

4451 summary this chapter is concerned with internal

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Unformatted text preview: ES icon will benefit from the use of the Engineering Equation Solver (EES), while problems labeled with a computer disk may require the use of a computer. The standard end-of-chapter problems 6.1 to 6.160 (categorized in the problem list below) are followed by word problems W6.1 to W6.5, fundamentals of engineering exam problems FE6.1 to FE6.15, comprehensive problems C6.1 to C6.5, and design projects D6.1 and D6.2. P6.5 For flow of SAE 10 oil through a 5-cm-diameter pipe, from Fig. A.1, for what flow rate in m3/h would we expect transition to turbulence at (a) 20°C and (b) 100°C? In flow past a body or wall, early transition to turbulence can be induced by placing a trip wire on the wall across the flow, as in Fig. P6.5. If the trip wire in Fig. P6.5 is placed where the local velocity is U, it will trigger turbulence if Ud/ 850, where d is the wire diameter [3, p. 386]. If the sphere diameter is 20 cm and transition is observed at ReD 90,000, what is the diameter of the trip wire in mm? Trip wire d Problem distribution Section Topic Problems 6.1 6.2 6.3 6.4 6.4 6...
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